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Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike,PO Box 12425,Lancaster,PA 17605-2425-717-656-2300 Fax:717-656-2681•www.larcasterIabs.com <br /> Page 3 of 4 <br /> Quality Control Summary <br /> Client Name: Chevron Environmental Mgt. Co. Group Number: 1121775 <br /> Reported: 12/10/08 at 02:30 PM <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in conjunction with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max_ <br /> Chrysene 91 91 70-130 0 30 <br /> Benzo(b)fluoranthene 85 94 70-130 10 30 <br /> Benzo(k)fluoranthene 80 85 70-130 5 30 <br /> Benzo(a)pyrene 27* 30* 70-130 13 30 <br /> Indeno(1,2,3-cd)pyrene 58* 54* 70-130 8 30 <br /> Dibenz(a,h)anthracene 70 62* 70-130 12 30 <br /> Benzo(g,h,i)perylene 44* 43* 70-130 2 30 <br /> Batch number: 08336021201A Sample number(s) : 5540037 UNSPK: 5540037 BKG: 5540037 <br /> Total Dissolved Solids 117 116 54-143 1 12 1,110,000 1,170,000 5 9 <br /> Batch number: 08337020202A Sample number(s) : 5540037 UNSPK: P539738 BKG: P539738 <br /> Alkalinity to pH 8.3 N.D. N.D. 0 (1) 4 <br /> Alkalinity to pH 4.5 98 103 64-130 4* 2 70,600 69,800 1 4 <br /> Batch number: 08339022101A Sample number(s) : 5540037 UNSPK: P539738 BKG: P539738 <br /> Ammonia Nitrogen 97 98 64-128 0 8 7,200 7,000 3* 2 <br /> Batch number: 08339110101A Sample number(s) : 5540037 UNSPK: P546044 BKG: P546044 <br /> Total Phosphorus as PO4 water 94 90-110 N.D. N.D. 0 (1) 3 <br /> Batch number: 08340108101A Sample number(s) : 5540037 UNSPK: P539738 BKG: P539738 <br /> Kjeldahl Nitrogen 111* 90-110 8,500 8,200 3 (1) 20 <br /> Batch number: G083381AA Sample number(s) : 5540037-5540038 UNSPK: P539185 <br /> Benzene 108 108 85-126 0 30 <br /> Toluene 106 107 87-128 1 30 <br /> Ethylbenzene 105 105 89-129 0 30 <br /> Xylene (Total) 101 101 84-131 1 30 <br /> Surrogate Quality Control <br /> Surrogate recoveries which are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise noted on the Analysis Report. <br /> Analysis Name: TPH-DRO water C10-C25 <br /> Batch number: 083310037A <br /> Orthoterphenyl <br /> 5540037 80 <br /> Blank 77 <br /> LCS 89 <br /> LCSD 103 <br /> Limits: 45-114 <br /> Analysis Name: PAHs in Water by LVI GC/MS <br /> Batch number: 08331WABO26 <br /> Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 <br /> *-Outside of specification <br /> (1)The result for one or both determinations was less than five times the LOQ. <br /> (2)The unspiked result was more than four times the spike added. <br />